Lighting fixture



May 22, 1934. L. c. DOANE LIGHTING FIXTURE Filed March 17, 1932.

INVENTOR Zero V C. Boa/1e. BY

ATTORNEY l atented May 22, 19 34 S'TTES PAT LIGHTING FIXTURE tien of Connecticut Application March 17,

7 Claims.

The present invention relates to lighting fixtures and is more particularly directed toward enclosed lighting fixtures adapted to employ ultra-violet lamps which emit both visible light and ultra-violet light of a biologically eflective nature.

The present invention contemplates a fixture having a downwardly acting reflector about a single light source for downwardly reflecting both forms of-light into a comparatively intensive beam so that the ultra-violet radiation may be directed toward a restricted area, a translucent enclosing globe above the reflector for concealing the reflector from observation at ordinary angles and giving the fixture its appearance, when unlighted, and arrangements within the globe for intercepting a small amount of light from the light source and scattering it inside the globe to render the globe luminous. Such an arrangement makes it possible to mask the reflector and have a fixture which is luminous when viewed from the side.

Other objects of the invention relate to the provision of a fixture of this nature wherein the reflector and light scattering means, generally a supplemental reflector, are secured together and held inside the globe so that the globe and reflector may be secured in a conventional globe holder in the usual manner.

The accompanying drawing shows, for purposes of illustrating the present invention, one of the many embodiments in which the invention may take form, it being understood that the drawing is illustrative of the invention rather than limiting the same. In the drawing:

Fig. 1 is a side elevational view of a lighting fixture with parts in section; and

Fig. 2 is a top plan view of the inside part, pertions being broken away.

A conventional shade or globe holder is shown at 10. It carries a pendant lamp socket l1, preferably of the type adapted to support an ultraviolet lamp bulb such as shown at 12. This bulb may be of the type known as the S2lam or any other suitable form of light source.

A diffusing glass globe or shade is shown at 13. Its upper end has the usual lip or bead 14; for securing it to the shade or globe holder, and its lower end has a large opening 15 as indicated. This globe may be of the type ordinarily employed in enclosed lighting units, except for this large bottom opening.

An aluminum reflector 16 has a bead 1'7 about the lower edge adapted to fit the glass opening. A number of spring clips 18 are secured about the opening 19 in the reflector, these clips ex- 1932, Serial No. seams (or. Mil- 78) tending upwardly and having bent portions, as shown at 20. The opening 19 is substantially larger than the neck of the lamp bulb 12. A reflector ring 21 has an outer beaded edge receivable in the clips 20, an arched reflecting surface 22, 0 and an opening .23, smaller than the opening 19. A number of springs 24 have their lower ends 25 hooked to the ring 21 and their upper ends 26 hooked about the bead 14 on the globe 13. These springs are under tension and act to hold the reflectors in place in the glass shade.

Substantially all the direct light from the light source, and light reflected by the cup 12a, is received by the reflector 16 and, owing to the nature of the reflector employed, the luminous and the ultra-violet light are reflected downwardly. A small amount of light passes up through the opening 19 and is reflected by the reflecting ring 21 out onto the globe. Some of its strikes the top of the reflector 16 and is again reflected. As this light is obtained from the single light source, additional sockets and lamp bulbs are not necessary to render the globe luminous. The lower edge of the reflector is below the level of the lamp bulb and hence conceals the bulb when the fixture is viewed from the side, and the globe fitting the reflector conceals the entire reflector.

It is obvious that the invention may be embodied in many forms and constructions, and I wish it to be understood that the particular form shown is but one of the many forms. Various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is:

1. A luminair comprising a shade holder, a translucent globe open at the top and secured to the shade holder, the globe having an opening in the bottom, an upwardly dished reflector whose lower edge engages the globe walls at the periphery of the lower opening, the reflector being centrally apertured to accommodate the neck of a lamp bulb, means for supporting the reflector from the upper edge of the globe, a lamp socket carried in the shade holder, a lamp bulb in the socket and I extending into the reflector, the reflector acting to downwardly reflect light from the lamp bulb and screen the globe against direct light from the lamp bulb, and a supplemental reflector housed within the globe above the first reflector for receiving light through the opening in the first reflector and reflecting it toward the globe walls.

2. A luminair comprising a shade holder, a translucent globe open at the top and secured to the shade holder, the globe having an opening in the bottom, an upwardly dished reflector whose lower edge engages the globe walls at the periphcry of the lower opening, the reflector being centrally apertured to accommodate the neck of a lamp bulb, means for supporting the reflector from the upper edge of the globe, a lamp socket carried in the shade holder, a lamp bulb in the socket and extending into the reflector, the reflector acting to downwardly reflect light from the lamp bulb and screen the globe against direct light from the lamp bulb, and a supplemental reflector housed within the globe above the first reflector for receiving light through the opening in the first reflector and reflecting it toward the globe walls, said reflector supporting means including a plurality of springs adapted to be placed under tension and hold the reflector edge against the globe.

3. In a direct lighting fixture having a pendant lamp socket and light source adapted to emit both visible light and ultra-violet radiation of a biologically eflective nature, and a downwardly acting opaque reflector for directing both forms of radiation downwardly, the combination therewith of a globe holder and translucent globe secured therein, the globe being outside of and above the reflector and adapted to conceal the reflector against observation except from underneath, the globe and globe holder concealing the socket, and a light directing reflector for intercepting light from the light source and scattering it about inside the globe to render it luminous when the source is lighted.

4. A lighting fixture as claimed in claim 3, having means for securing the two reflectors inside the globe so that the globe and reflectors may be secured to the globe holder as a unit.

5. A lighting fixture as claimed in claim 3, having a plurality of springs whose lower ends are secured to the reflectors and whose upper ends have hooked connections about the upper edge of the globe.

6. A lighting fixture comprising a pendant lamp bulb, a downwardly flaring reflector about the lamp bulb for downwardly reflecting light, the reflector having a central aperture substantially larger than the neck of the lamp bulb, a supplemental reflector supported above the first reflector and having a smaller aperture through which the neck of the lamp bulb passes, and a diffusing globe extending upwardly from the outer edge of the first reflector and having its upper edge above the supplemental reflector, the supplemental reflector acting on light to scatter it inside the globe.

7. A lighting fixture comprising a pendant lamp bulb, a downwardly flaring reflector about the lamp bulb for downwardly reflecting light, the reflector having a central aperture substantially larger than the neck of the lamp bulb, a supplemental reflector supported above the flrst reflector and having a smaller aperture through which the neck of the lamp bulb passes, a diffusing globe extending upwardly from the outer edge of the first reflector and having its upper edge above the supplemental reflector, the supplemental reflector acting on light to scatter it inside the globe, and globe carried means for securing the reflectors in place.

LEROY C. DOANE. 

